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RTC: Add utest for srs_rtp_seq_distance

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忘篱 2020-05-17 00:03:14 +08:00
parent be1b0bf941
commit 3f5ab8dc63
13 changed files with 206 additions and 38 deletions
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13
trunk/src/app/srs_app_rtc_queue.hpp
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@ -35,13 +35,14 @@ class SrsRtpQueue;
class SrsRtpRingBuffer;
// The "distance" between two uint16 number, for example:
// distance(low=3, high=5) === (int16_t)(uint16_t)((uint16_t)3-(uint16_t)5) === -2
// distance(low=3, high=65534) === (int16_t)(uint16_t)((uint16_t)3-(uint16_t)65534) === 5
// distance(low=65532, high=65534) === (int16_t)(uint16_t)((uint16_t)65532-(uint16_t)65534) === -2
// distance(prev_value=3, value=5) === (int16_t)(uint16_t)((uint16_t)3-(uint16_t)5) === -2
// distance(prev_value=3, value=65534) === (int16_t)(uint16_t)((uint16_t)3-(uint16_t)65534) === 5
// distance(prev_value=65532, value=65534) === (int16_t)(uint16_t)((uint16_t)65532-(uint16_t)65534) === -2
// For RTP sequence, it's only uint16 and may flip back, so 3 maybe 3+0xffff.
inline int16_t srs_rtp_seq_distance(const uint16_t& low, const uint16_t& high)
// @see https://mp.weixin.qq.com/s/JZTInmlB9FUWXBQw_7NYqg
inline int16_t srs_rtp_seq_distance(const uint16_t& prev_value, const uint16_t& value)
{
return (int16_t)(high - low);
return (int16_t)(value - prev_value);
}
// For UDP, the packets sequence may present as bellow:
@ -123,7 +124,7 @@ class SrsRtpNackForReceiver
{
private:
struct SeqComp {
bool operator()(const uint16_t& low, const uint16_t& high) const;
bool operator()(const uint16_t& pre_value, const uint16_t& value) const;
};
private:
// Nack queue, seq order, oldest to newest.